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1997 Report of Assessment and Research Activities
The IPHC Report of Assessment and Research Activities is a
compilation of progress reports relating to staff activities. Some of the information contained here has
changed since printing as new data is gathered and analyzed. For the most
up-to-date information, please contact the author by visiting the staff directory
for e-mail addresses or by phoning the Seattle office at (206) 634-1838.
 | Section 1 - Contents (pp.
1-50, pdf 2.2 MB)
 | Staff Recommendations for Research and Assessment:
1997/1998 and 1998/1999 |
|
| Section 2 - The Fishery
| Removals
 | 1997 Commercial fishery and regulation changes |
| Sport fishery |
| Wastage in the Pacific halibut commercial fishery |
| 1997 Estimates of personal use halibut |
|
| Sampling and Analysis (pp.
51-80, pdf 1.3 MB)
| Commercial catch sampling |
| Age composition and size at age of the commercial
fishery for 1997 |
| Discussion paper for an Alaskan Weighmaster
Program |
|
| Population Assessment (pp.
81-152, pdf 2.3 MB)
| Population assessment, 1997 |
| Population assessment, 1997 Technical
Supplement |
| Stock assessment methodology: Model
documentation |
|
| Analysis (pp. 153-210, pdf
2.3 MB)
| Relative fishing power of C-Hooks and J-Hooks |
| Coastwide distribution of exploitable biomass
according to 1997 setline surveys |
| Re-evaluation of the 32-inch commercial size
limit |
| A proposed method for setting Area 4 and Area
3B catch limits |
|
|
| Section 3 - Bycatch
| Catch and Mortality (pp.
211-282, pdf 2.9 MB)
| The 1997 groundfish fishery off Alaska:
Groundfish catches, halibut bycatches, and bycatch rates |
| Incidental catch and mortality of Pacific
halibut: 1962-1997 |
| Pacific halibut discard mortality rates in the
1990-1996 Alaskan groundfish fisheries, with recommendations for
monitoring in 1998 |
| Halibut discard mortality rates (DMRs) in the
1996 Bering Sea hook & line cod fishery |
| A summary of halibut bycatch information for
the British Columbia bottom trawl fishery |
| Pacific halibut bycatch in IPHC Area 2A:
Bycatch rates and current estimates of bycatch mortality |
|
| Research and Analysis (pp.
283-314, pdf 1.7 MB)
| Mean weight and length of halibut bycatch in
the 1996 groundfish fisheries off Alaska |
| Review of Alaska Fishery Development Foundation
bycatch research |
| NMFS-authorized distribution of halibut bycatch
in the groundfish fisheries off Alaska to economically disadvantaged
individuals |
| Halibut discard condition criteria: New
revisions for 1998 |
| Halibut bycatch and mortality: Database
management and data processing |
|
|
| Section 4 - Biological Research
| General (pp. 315-338,
pdf 1.4 MB)
| Climate change and halibut biology - Year One
progress report |
| Halibut early life history study: Project
status |
| An investigation into the occurrence and causes
of the chalky condition in Pacific halibut |
|
| Survey Results (pp. 339-398, pdf
3.0 MB)
| 1997 Setline grid survey |
| Preliminary cruise report for the 1997 NMFS
Aleutian Islands triennial trawl
survey |
| Observations of prior hook injuries on the 1997
stock assessment surveys |
|
| Tagging studies
| Tagging studies |
| Sport tagging program |
|
|
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